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Ligand-linked folding is perturbed for the majority of the BirA variants. A. Time courses of subtilisin-catalyzed cleavage of P126A BirA measured in the absence (▪) and presence (Δ) of saturating bio-5′-AMP. The lines represent the best-fit of the data to a single exponential model. B. Ratio of the pseudo first-order rates of subtilisin-mediated cleavage in the absence, kapo, and presence, kholo, of saturating bio-5′-AMP.
